"I think now that we know Sora might... er, that's his name, the person we met last night... I mean to say, after what happened there'll be better ways to restrain him tonight if need be. So we should be fine to keep searching with someone looking after him. I could meet you again?" Tsubaki replied.

Provided there would be a third clue, maybe the third night was the charm? The longer things dragged on, the more dangerous the illness became (not to mention, more draining on the sick people who had to endure it), but perseverance was the only way Tsubaki saw out of this whole mess.